What Is A Flex-Fuel Engine And How Does It Work
A flex-fuel engine, also known as a flexible fuel engine, is an internal combustion engine designed to operate on a range of fuel mixtures, typically a blend of gasoline and ethanol. Flex-fuel engines are commonly found in vehicles known as flex-fuel vehicles (FFVs). Here's a simplified explanation of how a flex-fuel engine works: Fuel System: A flex-fuel engine has a flexible fuel system that can handle different fuel compositions. It includes modified fuel injectors, fuel lines, and fuel sensors that are resistant to the corrosive properties of ethanol. Engine Control Unit (ECU): The engine control unit is responsible for controlling various engine functions, including fuel delivery, ignition timing, and air-fuel mixture. In a flex-fuel engine, the ECU is programmed to detect the fuel composition and adjust the engine parameters accordingly. Fuel Composition Detection: The ECU uses various sensors, such as a fuel composition sensor or an ethanol content sensor, to det...